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capev86 · 08-10-2010, 04:43 PM

ooops.....i didn't use 80/90 gear oil in the saginaw on my 72 burb c20. i used royal purple manual trans fluid. i did put r/p 75w-90 in the eaton rear when i swapped from a 4.57 to 4.10 gear. i haven't had any issues (yet) and the trans has well over 1,000 miles on it since the fluid change.

08-10-2010, 04:43 PM	#3
capev86 Registered User Join Date: May 2009 Location: Eliot, Maine Posts: 1,314	Re: Trans fluid ooops.....i didn't use 80/90 gear oil in the saginaw on my 72 burb c20. i used royal purple manual trans fluid. i did put r/p 75w-90 in the eaton rear when i swapped from a 4.57 to 4.10 gear. i haven't had any issues (yet) and the trans has well over 1,000 miles on it since the fluid change.